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2903.29.00.00/1,4-Dichloro-2-butene/Japan

1,4-Dichloro-2-butene from Japan

1,4-Dichloro-2-butene is a bifunctional unsaturated chlorinated compound used in pharmaceutical synthesis. Chemically defined under HTS 2903.29.00.00 with characteristic C=C and allylic chlorides. Intermediate for contrast agents and antivirals.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Specify cis/trans isomer ratio in commercial invoice for accurate statistical reporting

• Extremely toxic lachrymator; requires UN 2920 Corrosive/Acute Toxicity labeling

• Confirm no sulfonation that would shift to specific functional heading